Talking about the future: will and be going to

When talking about the future we can use will or going to.

We use will to:

- To make factual statements about the future (para construir oraciones basadas en hechos que tienen un respaldo cientifico por ejemplo estudios, estadísticas, etc. Factual significa objetivo, que se atiene a los hechos.)

e.g. There will be a solar eclipse in 2016.

- To make predictions, especially when they are based on our own thoughts or beliefs. (para hacer predicciones basadas en nuestros pensamientos o creencias)

e.g. I think you´ll  do well in your exams.

- To make offers (para hacer ofrecimientos) 

e.g. I´ll carry your bags.

- To make promises (para hacer promesas)

e.g. I´ll always love you.

- To make instant decisions (para tomar decisiones en el mismo momento en que se está hablando o algo sucede)

e.g. Look there is Tommy! I´ll go and say hello.

Structure:

Affirmative:

- S + will + V + C

e.g. She will be angry              

Negative:

- S + won´t (will not) + V + C

e.g. I won´t tell anybody

Interrogative:

- Will + S + V + C?

e.g. Will you be at home?

We use going to to:

- To make predictions, especially when they are based on what we can see. (para hacer predicciones basadas en lo que podemos ver)

e.g. Look at the man! He´s going to jump in the river.

- To talk about our intentions or decisions. (para hablar de nuestras intenciones, decisiones u planes)

e.g. I´m going to invite her to my party. 

Structure: 

Affirmative:

- S + be (am, is , are) going to + V + C

e.g. They are going to go swimming

Negative:

- S + be + not (am not, isn´t, aren´t) + V + C

e.g. I am not going to study medicine

Interrogative:

- Be  + S +going to + V + C?

e.g. Is she going to quit her job?

- 

-- 

-